摘要
目的:应用运动心力监测仪和运动试验的方法检测女运动员的心力变化趋势(CCCT)和第一心音(S1)幅值,对比研究心前区不同位置,胸骨体中下部(T区)和心尖部(M区))心力信号的差异性和相关性,以确定女运动员心音传感器放置的较佳位置;为女运动员心脏机能评定和临床康复女病人心功能评定提供新的思路;方法:随机纳入受试者60人,分为女运动员组(FA组),普通女大学生组(FC组),男运动员组(MA组)及普通男大学生组(MC组)。受试者在功率自行车上做递增负荷实验直至疲劳,应用运动心力监测仪记录受试者在运动的每个阶段的S1幅值,通过对每个受试者在完成不同运动的过程中胸骨体中下部S1幅值和心尖部S1幅值的监测,分别比较在不同运动负荷下女性受试者的胸骨体中下部S1幅值和心尖部S1幅值,男性受试者胸骨体中下部S1幅值和心尖部S1幅值;比较分析FA组与FC组,MA组与MC组在不同负荷下的心力变化趋势(CCCT),以及不同位置间的CCCT和S1之间的关系。结果:1)胸骨体中下部S1幅值与心尖部S1幅值的比较,在安静时及运动停止后5minFA组与FC组,MA组与MC组之间均存在非常显著性差异;胸骨体中下部S1幅值比心尖部S1幅值高2倍左右,且信号清晰,噪音干扰较少;2)胸骨体中下部S1幅值/心尖部S1幅值的相对比值,运动员与普通大学生之间不存在显著性差异;3)胸骨体中下部S1幅值和心尖部S1幅值呈正相关,其相关系数女性受试者为r=0.925(P<0.01),男性受试者为r=0.871(P<0.01);4)各组不同位置之间的CCCT数据均不存在显著性差异。结论:1)男女性同一受试者,同一时间段内,不同位置间的S1幅值比较存在显著性差异。胸骨体中下部采集的S1幅值较高,大约是在心尖部采集的S1幅值的2倍左右,且信号清晰,噪音干扰较少;2)心前区S1幅值和胸骨体中下部S1幅值呈高度正相关,因而心前区胸骨体下端可以作为今后女运动员心力信号采集的一个常规部位;3)两位置的CCCT数据间不存在显著性差异,这表明用CCCT这一相对值检测心肌收缩力可不受部位,胸壁厚薄等因素的影响,是一项较为可靠的心力检测指标。
Objective：The purpose of this study was to develop the monitoring method of cardiac contractility in female the location of transducer and technique become essential. This experiment was designed to explore and evaluate the correspondingly accurate position that the phonocardiography-sensor was placed on for female athletes, and to evaluate its applicability and reliability for more comprehensive application in sports medicine and the rehabilitation medicine. Method： There were 60 subjects randomly included. Grouping female athlete（group FA, n = 20）, female common college student （ group FC, n = 20 ）, control group male athlete （ group MA, n= 10）, male common college student（group MC, n= 10）. All subjects performed on Monark 839E Computerized Ergometer with increasing loads till fatigue. The Exercise Cardiac Contractility Monitor （ECCM） was put into using to detect and record the amplitude of the first heart sound （S1） and the cardiac contractility change trend （CCCT） of the subjects during the different exercise stage, Polar Heart Rate Monitor was applied to test the heart rate. In order to compare its applicability and reliability, the S1 and CCCT was recorded at middle-lower thoracic bone area （T area） and at near mitral auscultation area （M area） of the athlete and the common college student during the varied exercise workload stages respectively. Result： There wasoa significant difference between T area and M area （P〈0.01）, but there was no significant difference on CCCT between them during exercising and after exercising（P〉0. 05）. Both the female subjects and the male subjects show that the amplitude of the first heart sound （S1） was a very significant difference （ P 〈0. 01 ） at rest and 5 minutes after exercising, but there was no obvious difference between the two places in the CCCT（P〉0.05）. Conclusion：The result indicated that the S1 at T area was clearer and higher than M area （P〈0.01） and the CCCT of T area and M area had no differential （P〉0.05） in different exercise workloads stages, which was implied that the T area could be a reliable area to detect S1 and to evaluate CCCT for female athletes. This method might provide a reference indicator for female in sports medicine and the clinical medicine.
出处
《体育科学》
CSSCI
北大核心
2008年第9期55-60,共6页
China Sport Science
基金
国家自然科学基金(30270377)
四川省科技厅(05JY029-157)共同资助研究课题
关键词
女子
运动员
心肌收缩力
心脏听诊区
心力变化
趋势
female athlete
cardiac contractility
auscultation area
cardiac contractility change trend
first heart sound
